Geographic variation of floral scent in a highly specialized pollination mutualism

Soler, Catherine; Hossaert‐McKey, Martine; Buatois, Bruno; Bessière, Jean‐Marie; Schatz, Bertrand; Proffit, Magali

doi:10.1016/j.phytochem.2010.10.012

Cited by 59 publications

(84 citation statements)

References 42 publications

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“…The floral volatile signature, which often consists of a mixture of volatile organic compounds, is believed to be the main mechanism for maintaining pollinator specificity in many obligate pollination systems [10,15]. Intraspecific variations in floral volatiles may allow multiple pollinator species to coexist on one host [16], while their similarity among different plant species may facilitate pollinator sharing or shifts [17,18]. The extent to which plant taxa in an obligate system maintain the identity of their floral signature, especially among sympatric closely related taxa, may be critical to guarantee the reproductive isolation of plants.…”

Section: Introductionmentioning

confidence: 99%

Pollinator sharing and gene flow among closely related sympatric dioecious fig taxa

2016

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Section: Introductionmentioning

confidence: 99%

Pollinator sharing and gene flow among closely related sympatric dioecious fig taxa

2016

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“…Some pollinating floral parasites are known to respond more strongly to the floral scent signal of their specific hosts in areas where several potential host plant species occur in sympatry and attract different but closely related insect pollinators (Chen and Song 2008;HossaertMcKey et al 2010;Okamoto et al 2007;Proffit et al 2007;Svensson et al 2010). Additionally, recent evidence suggests that floral scent signals are geographically and phylogenetically variable in some of these highly specific pollination systems Soler et al 2011; but see Svensson et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Floral Scent Contributes to Interaction Specificity in Coevolving Plants and Their Insect Pollinators

et al. 2014

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Chemical defenses, repellents, and attractants are important shapers of species interactions. Chemical attractants could contribute to the divergence of coevolving plant-insect interactions, if pollinators are especially responsive to signals from the local plant species. We experimentally investigated patterns of daily floral scent production in three Lithophragma species (Saxifragaceae) that are geographically isolated and tested how scent divergence affects attraction of their major pollinator-the floral parasitic moth Greya politella (Prodoxidae). These moths oviposit through the corolla while simultaneously pollinating the flower with pollen adhering to the abdomen. The complex and species-specific floral scent profiles were emitted in higher amounts during the day, when these day-flying moths are active. There was minimal divergence found in petal color, which is another potential floral attractant. Female moths responded most strongly to scent from their local host species in olfactometer bioassays, and were more likely to oviposit in, and thereby pollinate, their local host species in no-choice trials. The results suggest that floral scent is an important attractant in this interaction. Local specialization in the pollinator response to a highly specific plant chemistry, thus, has the potential to contribute importantly to patterns of interaction specificity among coevolving plants and highly specialized pollinators.

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“…The wasps are assumed to recognize a mixture of volatile organic compounds constituting the host species'-specific signature [23,[25][26][27]. Data on two Ficus species have evidenced significant among-population variation of receptive fig floral odour within species [28]. As in other systems, intraspecific variation in the floral blend, forming floral 'chemotypes', could allow for more than one species of pollinator to be associated with the same host species [29,30].…”

Section: Introductionmentioning

confidence: 99%

Floral volatiles, pollinator sharing and diversification in the fig–wasp mutualism: insights from Ficus natalensis , and its two wasp pollinators (South Africa)

et al. 2011

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Combining biogeographic, ecological, morphological, molecular and chemical data, we document departure from strict specialization in the fig-pollinating wasp mutualism. We show that the pollinating wasps Elisabethiella stuckenbergi and Elisabethiella socotrensis form a species complex of five lineages in East and Southern Africa. Up to two morphologically distinct lineages were found to co-occur locally in the southern African region. Wasps belonging to a single lineage were frequently the main regional pollinators of several Ficus species. In South Africa, two sister lineages, E. stuckenbergi and E. socotrensis, pollinate Ficus natalensis but only E. stuckenbergi also regularly pollinates Ficus burkei. The two wasp species co-occur in individual trees of F. natalensis throughout KwaZulu-Natal. Floral volatile blends emitted by F. natalensis in KwaZulu-Natal were similar to those emitted by F. burkei and different from those produced by other African Ficus species. The fig odour similarity suggests evolutionary convergence to attract particular wasp species. The observed pattern may result from selection for pollinator sharing among Ficus species. Such a process, with one wasp species regionally pollinating several hosts, but several wasp species pollinating a given Ficus species across its geographical range could play an important role in the evolutionary dynamics of the Ficus-pollinating wasp association.

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Geographic variation of floral scent in a highly specialized pollination mutualism

Cited by 59 publications

References 42 publications

Pollinator sharing and gene flow among closely related sympatric dioecious fig taxa

Pollinator sharing and gene flow among closely related sympatric dioecious fig taxa

Floral Scent Contributes to Interaction Specificity in Coevolving Plants and Their Insect Pollinators

Floral volatiles, pollinator sharing and diversification in the fig–wasp mutualism: insights from Ficus natalensis , and its two wasp pollinators (South Africa)

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